Larger bowls cherry better. Breaking weed up can defenitely help a cherry. If you practice, you can use part of your hand to cup over part of the bowl and I think this helps, although i'm not sure of all the physcics of it. With smaller bowls you can hold the lighter from a distance (also using the cupping technuqie) until just the tip is pulled into the bowl. You can also use a bowlcap, and while it may not cherry ( but there's a reasonable chance it will) it will help to keep the weed from burning up too quickly and has a slight vaporizing effect.